#define ADIS16201_STARTUP_DELAY 220 /* ms */
-#define ADIS16201_READ_REG(a) a
-#define ADIS16201_WRITE_REG(a) ((a) | 0x80)
-
#define ADIS16201_FLASH_CNT 0x00 /* Flash memory write count */
#define ADIS16201_SUPPLY_OUT 0x02 /* Output, power supply */
#define ADIS16201_XACCL_OUT 0x04 /* Output, x-axis accelerometer */
#define ADIS16201_DIAG_STAT 0x3C /* Diagnostics, system status register */
#define ADIS16201_GLOB_CMD 0x3E /* Operation, system command register */
-#define ADIS16201_OUTPUTS 7
-
/* MSC_CTRL */
#define ADIS16201_MSC_CTRL_SELF_TEST_EN (1 << 8) /* Self-test enable */
#define ADIS16201_MSC_CTRL_DATA_RDY_EN (1 << 2) /* Data-ready enable: 1 = enabled, 0 = disabled */
/* DIAG_STAT */
#define ADIS16201_DIAG_STAT_ALARM2 (1<<9) /* Alarm 2 status: 1 = alarm active, 0 = alarm inactive */
#define ADIS16201_DIAG_STAT_ALARM1 (1<<8) /* Alarm 1 status: 1 = alarm active, 0 = alarm inactive */
-#define ADIS16201_DIAG_STAT_SPI_FAIL (1<<3) /* SPI communications failure */
-#define ADIS16201_DIAG_STAT_FLASH_UPT (1<<2) /* Flash update failure */
-#define ADIS16201_DIAG_STAT_POWER_HIGH (1<<1) /* Power supply above 3.625 V */
-#define ADIS16201_DIAG_STAT_POWER_LOW (1<<0) /* Power supply below 3.15 V */
+#define ADIS16201_DIAG_STAT_SPI_FAIL_BIT 3 /* SPI communications failure */
+#define ADIS16201_DIAG_STAT_FLASH_UPT_BIT 2 /* Flash update failure */
+#define ADIS16201_DIAG_STAT_POWER_HIGH_BIT 1 /* Power supply above 3.625 V */
+#define ADIS16201_DIAG_STAT_POWER_LOW_BIT 0 /* Power supply below 3.15 V */
/* GLOB_CMD */
#define ADIS16201_GLOB_CMD_SW_RESET (1<<7)
#define ADIS16201_GLOB_CMD_FACTORY_CAL (1<<1)
-#define ADIS16201_MAX_TX 14
-#define ADIS16201_MAX_RX 14
-
#define ADIS16201_ERROR_ACTIVE (1<<14)
-/**
- * struct adis16201_state - device instance specific data
- * @us: actual spi_device
- * @trig: data ready trigger registered with iio
- * @tx: transmit buffer
- * @rx: receive buffer
- * @buf_lock: mutex to protect tx and rx
- **/
-struct adis16201_state {
- struct spi_device *us;
- struct iio_trigger *trig;
- struct mutex buf_lock;
- u8 tx[14] ____cacheline_aligned;
- u8 rx[14];
-};
-
-int adis16201_set_irq(struct iio_dev *indio_dev, bool enable);
-
enum adis16201_scan {
- ADIS16201_SCAN_SUPPLY,
ADIS16201_SCAN_ACC_X,
ADIS16201_SCAN_ACC_Y,
- ADIS16201_SCAN_AUX_ADC,
- ADIS16201_SCAN_TEMP,
ADIS16201_SCAN_INCLI_X,
ADIS16201_SCAN_INCLI_Y,
+ ADIS16201_SCAN_SUPPLY,
+ ADIS16201_SCAN_AUX_ADC,
+ ADIS16201_SCAN_TEMP,
};
-#ifdef CONFIG_IIO_BUFFER
-void adis16201_remove_trigger(struct iio_dev *indio_dev);
-int adis16201_probe_trigger(struct iio_dev *indio_dev);
-
-ssize_t adis16201_read_data_from_ring(struct device *dev,
- struct device_attribute *attr,
- char *buf);
-
-int adis16201_configure_ring(struct iio_dev *indio_dev);
-void adis16201_unconfigure_ring(struct iio_dev *indio_dev);
-
-#else /* CONFIG_IIO_BUFFER */
-
-static inline void adis16201_remove_trigger(struct iio_dev *indio_dev)
-{
-}
-
-static inline int adis16201_probe_trigger(struct iio_dev *indio_dev)
-{
- return 0;
-}
-
-static inline ssize_t
-adis16201_read_data_from_ring(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- return 0;
-}
-
-static int adis16201_configure_ring(struct iio_dev *indio_dev)
-{
- return 0;
-}
-
-static inline void adis16201_unconfigure_ring(struct iio_dev *indio_dev)
-{
-}
-
-static inline int adis16201_initialize_ring(struct iio_ring_buffer *ring)
-{
- return 0;
-}
-
-static inline void adis16201_uninitialize_ring(struct iio_ring_buffer *ring)
-{
-}
-
-#endif /* CONFIG_IIO_BUFFER */
#endif /* SPI_ADIS16201_H_ */
#include <linux/iio/buffer.h>
#include "adis16201.h"
+#include "../imu/adis.h"
-enum adis16201_chan {
- in_supply,
- temp,
- accel_x,
- accel_y,
- incli_x,
- incli_y,
- in_aux,
-};
-
-/**
- * adis16201_spi_write_reg_8() - write single byte to a register
- * @dev: device associated with child of actual device (iio_dev or iio_trig)
- * @reg_address: the address of the register to be written
- * @val: the value to write
- **/
-static int adis16201_spi_write_reg_8(struct iio_dev *indio_dev,
- u8 reg_address,
- u8 val)
-{
- int ret;
- struct adis16201_state *st = iio_priv(indio_dev);
-
- mutex_lock(&st->buf_lock);
- st->tx[0] = ADIS16201_WRITE_REG(reg_address);
- st->tx[1] = val;
-
- ret = spi_write(st->us, st->tx, 2);
- mutex_unlock(&st->buf_lock);
-
- return ret;
-}
-
-/**
- * adis16201_spi_write_reg_16() - write 2 bytes to a pair of registers
- * @indio_dev: iio device associated with child of actual device
- * @reg_address: the address of the lower of the two registers. Second register
- * is assumed to have address one greater.
- * @val: value to be written
- **/
-static int adis16201_spi_write_reg_16(struct iio_dev *indio_dev,
- u8 lower_reg_address,
- u16 value)
-{
- int ret;
- struct spi_message msg;
- struct adis16201_state *st = iio_priv(indio_dev);
- struct spi_transfer xfers[] = {
- {
- .tx_buf = st->tx,
- .bits_per_word = 8,
- .len = 2,
- .cs_change = 1,
- }, {
- .tx_buf = st->tx + 2,
- .bits_per_word = 8,
- .len = 2,
- },
- };
-
- mutex_lock(&st->buf_lock);
- st->tx[0] = ADIS16201_WRITE_REG(lower_reg_address);
- st->tx[1] = value & 0xFF;
- st->tx[2] = ADIS16201_WRITE_REG(lower_reg_address + 1);
- st->tx[3] = (value >> 8) & 0xFF;
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfers[0], &msg);
- spi_message_add_tail(&xfers[1], &msg);
- ret = spi_sync(st->us, &msg);
- mutex_unlock(&st->buf_lock);
-
- return ret;
-}
-
-/**
- * adis16201_spi_read_reg_16() - read 2 bytes from a 16-bit register
- * @indio_dev: iio device associated with child of actual device
- * @reg_address: the address of the lower of the two registers. Second register
- * is assumed to have address one greater.
- * @val: somewhere to pass back the value read
- **/
-static int adis16201_spi_read_reg_16(struct iio_dev *indio_dev,
- u8 lower_reg_address,
- u16 *val)
-{
- struct spi_message msg;
- struct adis16201_state *st = iio_priv(indio_dev);
- int ret;
- struct spi_transfer xfers[] = {
- {
- .tx_buf = st->tx,
- .bits_per_word = 8,
- .len = 2,
- .cs_change = 1,
- .delay_usecs = 20,
- }, {
- .rx_buf = st->rx,
- .bits_per_word = 8,
- .len = 2,
- .delay_usecs = 20,
- },
- };
-
- mutex_lock(&st->buf_lock);
- st->tx[0] = ADIS16201_READ_REG(lower_reg_address);
- st->tx[1] = 0;
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfers[0], &msg);
- spi_message_add_tail(&xfers[1], &msg);
- ret = spi_sync(st->us, &msg);
- if (ret) {
- dev_err(&st->us->dev, "problem when reading 16 bit register 0x%02X",
- lower_reg_address);
- goto error_ret;
- }
- *val = (st->rx[0] << 8) | st->rx[1];
-
-error_ret:
- mutex_unlock(&st->buf_lock);
- return ret;
-}
-
-static int adis16201_reset(struct iio_dev *indio_dev)
-{
- int ret;
- struct adis16201_state *st = iio_priv(indio_dev);
-
- ret = adis16201_spi_write_reg_8(indio_dev,
- ADIS16201_GLOB_CMD,
- ADIS16201_GLOB_CMD_SW_RESET);
- if (ret)
- dev_err(&st->us->dev, "problem resetting device");
-
- return ret;
-}
-
-int adis16201_set_irq(struct iio_dev *indio_dev, bool enable)
-{
- int ret = 0;
- u16 msc;
-
- ret = adis16201_spi_read_reg_16(indio_dev, ADIS16201_MSC_CTRL, &msc);
- if (ret)
- goto error_ret;
-
- msc |= ADIS16201_MSC_CTRL_ACTIVE_HIGH;
- msc &= ~ADIS16201_MSC_CTRL_DATA_RDY_DIO1;
- if (enable)
- msc |= ADIS16201_MSC_CTRL_DATA_RDY_EN;
- else
- msc &= ~ADIS16201_MSC_CTRL_DATA_RDY_EN;
-
- ret = adis16201_spi_write_reg_16(indio_dev, ADIS16201_MSC_CTRL, msc);
-
-error_ret:
- return ret;
-}
-
-static int adis16201_check_status(struct iio_dev *indio_dev)
-{
- u16 status;
- int ret;
-
- ret = adis16201_spi_read_reg_16(indio_dev,
- ADIS16201_DIAG_STAT, &status);
- if (ret < 0) {
- dev_err(&indio_dev->dev, "Reading status failed\n");
- goto error_ret;
- }
- ret = status & 0xF;
- if (ret)
- ret = -EFAULT;
-
- if (status & ADIS16201_DIAG_STAT_SPI_FAIL)
- dev_err(&indio_dev->dev, "SPI failure\n");
- if (status & ADIS16201_DIAG_STAT_FLASH_UPT)
- dev_err(&indio_dev->dev, "Flash update failed\n");
- if (status & ADIS16201_DIAG_STAT_POWER_HIGH)
- dev_err(&indio_dev->dev, "Power supply above 3.625V\n");
- if (status & ADIS16201_DIAG_STAT_POWER_LOW)
- dev_err(&indio_dev->dev, "Power supply below 3.15V\n");
-
-error_ret:
- return ret;
-}
-
-static int adis16201_self_test(struct iio_dev *indio_dev)
-{
- int ret;
- ret = adis16201_spi_write_reg_16(indio_dev,
- ADIS16201_MSC_CTRL,
- ADIS16201_MSC_CTRL_SELF_TEST_EN);
- if (ret) {
- dev_err(&indio_dev->dev, "problem starting self test");
- goto err_ret;
- }
-
- ret = adis16201_check_status(indio_dev);
-
-err_ret:
- return ret;
-}
-
-static int adis16201_initial_setup(struct iio_dev *indio_dev)
-{
- int ret;
- struct device *dev = &indio_dev->dev;
-
- /* Disable IRQ */
- ret = adis16201_set_irq(indio_dev, false);
- if (ret) {
- dev_err(dev, "disable irq failed");
- goto err_ret;
- }
-
- /* Do self test */
- ret = adis16201_self_test(indio_dev);
- if (ret) {
- dev_err(dev, "self test failure");
- goto err_ret;
- }
-
- /* Read status register to check the result */
- ret = adis16201_check_status(indio_dev);
- if (ret) {
- adis16201_reset(indio_dev);
- dev_err(dev, "device not playing ball -> reset");
- msleep(ADIS16201_STARTUP_DELAY);
- ret = adis16201_check_status(indio_dev);
- if (ret) {
- dev_err(dev, "giving up");
- goto err_ret;
- }
- }
-
-err_ret:
- return ret;
-}
-
-static u8 adis16201_addresses[7][2] = {
- [in_supply] = { ADIS16201_SUPPLY_OUT, },
- [temp] = { ADIS16201_TEMP_OUT },
- [accel_x] = { ADIS16201_XACCL_OUT, ADIS16201_XACCL_OFFS },
- [accel_y] = { ADIS16201_YACCL_OUT, ADIS16201_YACCL_OFFS },
- [in_aux] = { ADIS16201_AUX_ADC },
- [incli_x] = { ADIS16201_XINCL_OUT },
- [incli_y] = { ADIS16201_YINCL_OUT },
+static const u8 adis16201_addresses[] = {
+ [ADIS16201_SCAN_ACC_X] = ADIS16201_XACCL_OFFS,
+ [ADIS16201_SCAN_ACC_Y] = ADIS16201_YACCL_OFFS,
+ [ADIS16201_SCAN_INCLI_X] = ADIS16201_XINCL_OFFS,
+ [ADIS16201_SCAN_INCLI_Y] = ADIS16201_YINCL_OFFS,
};
static int adis16201_read_raw(struct iio_dev *indio_dev,
int *val, int *val2,
long mask)
{
+ struct adis *st = iio_priv(indio_dev);
int ret;
int bits;
u8 addr;
switch (mask) {
case IIO_CHAN_INFO_RAW:
- mutex_lock(&indio_dev->mlock);
- addr = adis16201_addresses[chan->address][0];
- ret = adis16201_spi_read_reg_16(indio_dev, addr, &val16);
- if (ret) {
- mutex_unlock(&indio_dev->mlock);
- return ret;
- }
-
- if (val16 & ADIS16201_ERROR_ACTIVE) {
- ret = adis16201_check_status(indio_dev);
- if (ret) {
- mutex_unlock(&indio_dev->mlock);
- return ret;
- }
- }
- val16 = val16 & ((1 << chan->scan_type.realbits) - 1);
- if (chan->scan_type.sign == 's')
- val16 = (s16)(val16 <<
- (16 - chan->scan_type.realbits)) >>
- (16 - chan->scan_type.realbits);
- *val = val16;
- mutex_unlock(&indio_dev->mlock);
- return IIO_VAL_INT;
+ return adis_single_conversion(indio_dev, chan,
+ ADIS16201_ERROR_ACTIVE, val);
case IIO_CHAN_INFO_SCALE:
switch (chan->type) {
case IIO_VOLTAGE:
return -EINVAL;
}
mutex_lock(&indio_dev->mlock);
- addr = adis16201_addresses[chan->address][1];
- ret = adis16201_spi_read_reg_16(indio_dev, addr, &val16);
+ addr = adis16201_addresses[chan->scan_index];
+ ret = adis_read_reg_16(st, addr, &val16);
if (ret) {
mutex_unlock(&indio_dev->mlock);
return ret;
int val2,
long mask)
{
+ struct adis *st = iio_priv(indio_dev);
int bits;
s16 val16;
u8 addr;
return -EINVAL;
}
val16 = val & ((1 << bits) - 1);
- addr = adis16201_addresses[chan->address][1];
- return adis16201_spi_write_reg_16(indio_dev, addr, val16);
+ addr = adis16201_addresses[chan->scan_index];
+ return adis_write_reg_16(st, addr, val16);
}
return -EINVAL;
}
static const struct iio_chan_spec adis16201_channels[] = {
- {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 0,
- .extend_name = "supply",
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
- .address = in_supply,
- .scan_index = ADIS16201_SCAN_SUPPLY,
- .scan_type = {
- .sign = 'u',
- .realbits = 12,
- .storagebits = 16,
- },
- }, {
- .type = IIO_TEMP,
- .indexed = 1,
- .channel = 0,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SEPARATE_BIT |
- IIO_CHAN_INFO_OFFSET_SEPARATE_BIT,
- .address = temp,
- .scan_index = ADIS16201_SCAN_TEMP,
- .scan_type = {
- .sign = 'u',
- .realbits = 12,
- .storagebits = 16,
- },
- }, {
- .type = IIO_ACCEL,
- .modified = 1,
- .channel2 = IIO_MOD_X,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SHARED_BIT |
- IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT,
- .address = accel_x,
- .scan_index = ADIS16201_SCAN_ACC_X,
- .scan_type = {
- .sign = 's',
- .realbits = 14,
- .storagebits = 16,
- },
- }, {
- .type = IIO_ACCEL,
- .modified = 1,
- .channel2 = IIO_MOD_Y,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SHARED_BIT |
- IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT,
- .address = accel_y,
- .scan_index = ADIS16201_SCAN_ACC_Y,
- .scan_type = {
- .sign = 's',
- .realbits = 14,
- .storagebits = 16,
- },
- }, {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 1,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
- .address = in_aux,
- .scan_index = ADIS16201_SCAN_AUX_ADC,
- .scan_type = {
- .sign = 'u',
- .realbits = 12,
- .storagebits = 16,
- },
- }, {
- .type = IIO_INCLI,
- .modified = 1,
- .channel2 = IIO_MOD_X,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SHARED_BIT |
- IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT,
- .address = incli_x,
- .scan_index = ADIS16201_SCAN_INCLI_X,
- .scan_type = {
- .sign = 's',
- .realbits = 14,
- .storagebits = 16,
- },
- }, {
- .type = IIO_INCLI,
- .modified = 1,
- .channel2 = IIO_MOD_Y,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SHARED_BIT |
- IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT,
- .address = incli_y,
- .scan_index = ADIS16201_SCAN_INCLI_Y,
- .scan_type = {
- .sign = 's',
- .realbits = 14,
- .storagebits = 16,
- },
- },
+ ADIS_SUPPLY_CHAN(ADIS16201_SUPPLY_OUT, ADIS16201_SCAN_SUPPLY, 12),
+ ADIS_TEMP_CHAN(ADIS16201_TEMP_OUT, ADIS16201_SCAN_TEMP, 12),
+ ADIS_ACCEL_CHAN(X, ADIS16201_XACCL_OUT, ADIS16201_SCAN_ACC_X,
+ IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT, 14),
+ ADIS_ACCEL_CHAN(Y, ADIS16201_YACCL_OUT, ADIS16201_SCAN_ACC_Y,
+ IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT, 14),
+ ADIS_AUX_ADC_CHAN(ADIS16201_AUX_ADC, ADIS16201_SCAN_AUX_ADC, 12),
+ ADIS_INCLI_CHAN(X, ADIS16201_XINCL_OUT, ADIS16201_SCAN_INCLI_X,
+ IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT, 14),
+ ADIS_INCLI_CHAN(X, ADIS16201_YINCL_OUT, ADIS16201_SCAN_INCLI_Y,
+ IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT, 14),
IIO_CHAN_SOFT_TIMESTAMP(7)
};
.driver_module = THIS_MODULE,
};
+static const char * const adis16201_status_error_msgs[] = {
+ [ADIS16201_DIAG_STAT_SPI_FAIL_BIT] = "SPI failure",
+ [ADIS16201_DIAG_STAT_FLASH_UPT_BIT] = "Flash update failed",
+ [ADIS16201_DIAG_STAT_POWER_HIGH_BIT] = "Power supply above 3.625V",
+ [ADIS16201_DIAG_STAT_POWER_LOW_BIT] = "Power supply below 3.15V",
+};
+
+static const struct adis_data adis16201_data = {
+ .read_delay = 20,
+ .msc_ctrl_reg = ADIS16201_MSC_CTRL,
+ .glob_cmd_reg = ADIS16201_GLOB_CMD,
+ .diag_stat_reg = ADIS16201_DIAG_STAT,
+
+ .self_test_mask = ADIS16201_MSC_CTRL_SELF_TEST_EN,
+ .startup_delay = ADIS16201_STARTUP_DELAY,
+
+ .status_error_msgs = adis16201_status_error_msgs,
+ .status_error_mask = BIT(ADIS16201_DIAG_STAT_SPI_FAIL_BIT) |
+ BIT(ADIS16201_DIAG_STAT_FLASH_UPT_BIT) |
+ BIT(ADIS16201_DIAG_STAT_POWER_HIGH_BIT) |
+ BIT(ADIS16201_DIAG_STAT_POWER_LOW_BIT),
+};
+
static int __devinit adis16201_probe(struct spi_device *spi)
{
int ret;
- struct adis16201_state *st;
+ struct adis *st;
struct iio_dev *indio_dev;
/* setup the industrialio driver allocated elements */
/* this is only used for removal purposes */
spi_set_drvdata(spi, indio_dev);
- st->us = spi;
- mutex_init(&st->buf_lock);
-
indio_dev->name = spi->dev.driver->name;
indio_dev->dev.parent = &spi->dev;
indio_dev->info = &adis16201_info;
indio_dev->num_channels = ARRAY_SIZE(adis16201_channels);
indio_dev->modes = INDIO_DIRECT_MODE;
- ret = adis16201_configure_ring(indio_dev);
+ ret = adis_init(st, indio_dev, spi, &adis16201_data);
+ if (ret)
+ goto error_free_dev;
+ ret = adis_setup_buffer_and_trigger(st, indio_dev, NULL);
if (ret)
goto error_free_dev;
-
- ret = iio_buffer_register(indio_dev,
- adis16201_channels,
- ARRAY_SIZE(adis16201_channels));
- if (ret) {
- printk(KERN_ERR "failed to initialize the ring\n");
- goto error_unreg_ring_funcs;
- }
-
- if (spi->irq) {
- ret = adis16201_probe_trigger(indio_dev);
- if (ret)
- goto error_uninitialize_ring;
- }
/* Get the device into a sane initial state */
- ret = adis16201_initial_setup(indio_dev);
+ ret = adis_initial_startup(st);
if (ret)
- goto error_remove_trigger;
+ goto error_cleanup_buffer_trigger;
ret = iio_device_register(indio_dev);
if (ret < 0)
- goto error_remove_trigger;
+ goto error_cleanup_buffer_trigger;
return 0;
-error_remove_trigger:
- adis16201_remove_trigger(indio_dev);
-error_uninitialize_ring:
- iio_buffer_unregister(indio_dev);
-error_unreg_ring_funcs:
- adis16201_unconfigure_ring(indio_dev);
+error_cleanup_buffer_trigger:
+ adis_cleanup_buffer_and_trigger(st, indio_dev);
error_free_dev:
iio_device_free(indio_dev);
error_ret:
static int __devexit adis16201_remove(struct spi_device *spi)
{
struct iio_dev *indio_dev = spi_get_drvdata(spi);
+ struct adis *st = iio_priv(indio_dev);
iio_device_unregister(indio_dev);
- adis16201_remove_trigger(indio_dev);
- iio_buffer_unregister(indio_dev);
- adis16201_unconfigure_ring(indio_dev);
+ adis_cleanup_buffer_and_trigger(st, indio_dev);
iio_device_free(indio_dev);
return 0;
+++ /dev/null
-#include <linux/export.h>
-#include <linux/interrupt.h>
-#include <linux/mutex.h>
-#include <linux/kernel.h>
-#include <linux/spi/spi.h>
-#include <linux/slab.h>
-
-#include <linux/iio/iio.h>
-#include "../ring_sw.h"
-#include <linux/iio/trigger_consumer.h>
-#include "adis16201.h"
-
-
-/**
- * adis16201_read_ring_data() read data registers which will be placed into ring
- * @dev: device associated with child of actual device (iio_dev or iio_trig)
- * @rx: somewhere to pass back the value read
- **/
-static int adis16201_read_ring_data(struct iio_dev *indio_dev, u8 *rx)
-{
- struct spi_message msg;
- struct adis16201_state *st = iio_priv(indio_dev);
- struct spi_transfer xfers[ADIS16201_OUTPUTS + 1];
- int ret;
- int i;
-
- mutex_lock(&st->buf_lock);
-
- spi_message_init(&msg);
-
- memset(xfers, 0, sizeof(xfers));
- for (i = 0; i <= ADIS16201_OUTPUTS; i++) {
- xfers[i].bits_per_word = 8;
- xfers[i].cs_change = 1;
- xfers[i].len = 2;
- xfers[i].delay_usecs = 20;
- if (i < ADIS16201_OUTPUTS) {
- xfers[i].tx_buf = st->tx + 2 * i;
- st->tx[2 * i] = ADIS16201_READ_REG(ADIS16201_SUPPLY_OUT +
- 2 * i);
- st->tx[2 * i + 1] = 0;
- }
- if (i >= 1)
- xfers[i].rx_buf = rx + 2 * (i - 1);
- spi_message_add_tail(&xfers[i], &msg);
- }
-
- ret = spi_sync(st->us, &msg);
- if (ret)
- dev_err(&st->us->dev, "problem when burst reading");
-
- mutex_unlock(&st->buf_lock);
-
- return ret;
-}
-
-/* Whilst this makes a lot of calls to iio_sw_ring functions - it is to device
- * specific to be rolled into the core.
- */
-static irqreturn_t adis16201_trigger_handler(int irq, void *p)
-{
- struct iio_poll_func *pf = p;
- struct iio_dev *indio_dev = pf->indio_dev;
- struct adis16201_state *st = iio_priv(indio_dev);
-
- int i = 0;
- s16 *data;
-
- data = kmalloc(indio_dev->scan_bytes, GFP_KERNEL);
- if (data == NULL) {
- dev_err(&st->us->dev, "memory alloc failed in ring bh");
- goto done;
- }
-
- if (!bitmap_empty(indio_dev->active_scan_mask, indio_dev->masklength)
- && adis16201_read_ring_data(indio_dev, st->rx) >= 0)
- for (; i < bitmap_weight(indio_dev->active_scan_mask,
- indio_dev->masklength); i++)
- data[i] = be16_to_cpup((__be16 *)&(st->rx[i*2]));
-
- /* Guaranteed to be aligned with 8 byte boundary */
- if (indio_dev->scan_timestamp)
- *((s64 *)(data + ((i + 3)/4)*4)) = pf->timestamp;
-
- iio_push_to_buffers(indio_dev, (u8 *)data);
-
- kfree(data);
-done:
- iio_trigger_notify_done(indio_dev->trig);
-
- return IRQ_HANDLED;
-}
-
-void adis16201_unconfigure_ring(struct iio_dev *indio_dev)
-{
- iio_dealloc_pollfunc(indio_dev->pollfunc);
- iio_sw_rb_free(indio_dev->buffer);
-}
-
-static const struct iio_buffer_setup_ops adis16201_ring_setup_ops = {
- .preenable = &iio_sw_buffer_preenable,
- .postenable = &iio_triggered_buffer_postenable,
- .predisable = &iio_triggered_buffer_predisable,
-};
-
-int adis16201_configure_ring(struct iio_dev *indio_dev)
-{
- int ret = 0;
- struct iio_buffer *ring;
-
- ring = iio_sw_rb_allocate(indio_dev);
- if (!ring) {
- ret = -ENOMEM;
- return ret;
- }
- indio_dev->buffer = ring;
- ring->scan_timestamp = true;
- indio_dev->setup_ops = &adis16201_ring_setup_ops;
-
- indio_dev->pollfunc = iio_alloc_pollfunc(&iio_pollfunc_store_time,
- &adis16201_trigger_handler,
- IRQF_ONESHOT,
- indio_dev,
- "adis16201_consumer%d",
- indio_dev->id);
- if (indio_dev->pollfunc == NULL) {
- ret = -ENOMEM;
- goto error_iio_sw_rb_free;
- }
-
- indio_dev->modes |= INDIO_BUFFER_TRIGGERED;
- return 0;
-error_iio_sw_rb_free:
- iio_sw_rb_free(indio_dev->buffer);
- return ret;
-}
projects / deliverable / linux.git / commitdiff
